Addendum 1_Hermosa Lagoon Expansion Project 00112515.00.pdf

Addendum #1

Town of Hermosa

Lagoon Expansion Project

CWSRF No. C461278-03

Benesch Project No. 00112515.00 Date Issued: November 18, 2024

TO ALL BID DOCUMENT HOLDERS OF RECORD:

Acknowledge receipt of this addendum by inserting its number in the space provided on the Bid

Form (Section 4 Bidders Proposal, page 2). Failure to do so may subject Bidder to disqualification.

This addendum forms a part of the Bidding Documents and modifieds them as follows:

Note 1. The liquidated damages clause is tied to an agreement between the town of Hermosa and the State of South Dakota Department of Agriculture and Natural Resources (DANR) to complete the project according to the schedule defined. No additional time can be given unless first pre-approved by DANR.

Note 2. Corrections to the bid tab forms.

• Section 4, Page 1. The following numbering system should be added to the left side for clarity.

General

1 Mobilization

2 Construction Stake-out

3 Materials Testing

4 Clearing, grubbing & fence/dock removals

Utilities

5 Connect to existing manhole (8-inch pipe)

6 4 ft. diameter sanitary manhole

7 4 inch cleanout

8 6 ft. diameter sanitary manhole (pump Station)

9 4 inch SDR 11 force main pipe

10 4 inch CI-54 Ductile Iron gravity pipe

11 4 inch Sch-80 PVC gravity pipe

12 8 inch Sch-80 PVC gravity pipe

• Items 20. A minimum of 1 inch of bentonite over the square footage provided is the local preference. The contractor may provide alternative liner options (ie. Synthetic liners) if they meet the seepage requirements listed and conform to the South Dakota Design manual, which has been specified in Section 8 (Detailed Specifications), Part 16 (Pond bottom), Sub-Part A.5 and A.7

• Typo. Item 22 shall be “Proposed 6 ft. High chain link fence”.

• Item 25: Electrical Conduit shall be a minimum of 3 inch. Diameter Schedule 40, (ASTM

F512, NEMA TC-6 and/or ANSI/UL 651A).

• Item 26. Signal Conduit shall be a minimum of 1 inch. Diameter Schedule 40, (ASTM F512, NEMA TC-6 and/or ANSI/UL 651A).

Note 3. Power and Controls to the Pump Station

The control panel for the pump station shall be provided by Town. The three-phase power wire and the 3-wire signal transmitter wire from the treatment plant to the panel should be included in the price for bid item 25 and 26, respectively. The labor and materials to mount the panel to a uni-strut at the pump station should be included in bid item 8.

Note 4. Pay Application Form. The town will provide a pay application form, which will be the

EJCDC No. C-620 standard form.

Note 5. Pump Specifications

An alternate Pump Manufacturer will be considered without pre-approval as long as duty points are similar to the specification.

Note 6. Stockpile Area

The excess material from the excavation shall be stockpiled inside the property boundaries identified on the plans, see Sheet C09. There are two areas available to stockpile materials:

East of the Entrance Driveway, North of Lagoons = approximately 2,300 SY

West of Entrance Driveway, North and West of Lagoons = approximately 1,700 SY

The embankment created from the stockpiled spoils can be as high as 15 feet measured from the lowest point and shall be three horizontal to one vertical to prevent erosion. Embankments shall be covered with at least 4 inches of fertile topsoil and seeded with low-growing and spreading perennial grasses that withstand erosion.

There is approximately 300 SY of broken concrete that will need to be cleared from the west side of

Lagoon A (Cell1) and placed 90 yards to the south.

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